Hoist for trucks



Feb. 15, 1927, 1,617,585

J. E. FOSTER HoIsT FOR TRUCKS Enea sept.. 12. 1925 2 shuts-Sheet.

surface of portions 18a thereof are adapted to enga-geV with plates 21 secured to the bottom yofthe body'member 9 or, specifically, tothe bottom of the cross members 10, which plates Y may be of any desired shape, such as the l channel members illustrated. Eccentrics 18 also have lugs 18t close to their forward or free ends in which are j ournaled the outwardly. extending portions 22a of the U-V shaped yoke member'22, the bight port-ion Vv22b of which is disposed between the sides of a U-shaped bar or yoke 23 connected at Y itsfupper end to each side of one of the cross pieces 10. Secured to the lower ends ofthe vportions 18b of thefeccentrics 18 are flexible membersrof any suitable type, such as the -Y cables '24 shown asconnected to nutted eye-i bolts 24a passing through portions 18". The

lportions 18a of the eccentrics 18 haveV slots or notches at their free ends adapted -to en gage cable 24 when the eccentrics 18 are in Ltheir lowermost position. The cablesl 24 eX- tend toi' and Vhave their ends connected to a windlass shaft -25 also extending between Vandjournaled in the members '12, being held inApla-ce at one' end byfa collar 26 pinned thereto and engaging one-'member'12, and at its other end by the gear 27 secured vthereto and engaging the other member 1-2. The gear V27 meshes with a gear 28 mounted on a stub shaft 29 journaled in one member 12 and gear 28 in turn meshes with a pinion 30 -secured to a shaft 311also extending between Vandjrourna'led in the members 12 below memlbers 11', said shaft being held inplace at one end bythe pinion and at its other end by a collar 32 pinned thereto, which collar and pinion,V respectively engage the members 1 2. The shaft 31projects at each end beyond the members 11 Aand is adapted'to receive a crank handler The crank handle maybe made'detachable or may Ybe secured in Vlace b a in 34. 'Forward of shaft-31 a bar 35extends through members r12 and through the members 11 having one end'bent fat right angles to "formahandle by'which itmay be removed. The rod-orbar 35 -mayl be provided with any suitable means (notr` shown) for holding it from longitudinal movement. 1A pawl 36 Vis vsiecuredk to astub vshaft' 37 Vat the inner-'side of one ofthe members 12inwhich said shaft 37jisl journaled, said shaft having a handle 38 secured thereto atthe'oute'r side of'said m'ember 12, the pawl 36 being adapted to engage the teeth ofgear 27 and being urged into engagement withsaid teeth by a small tensile spring 39 secured thereto at one end, and atV its other end,to a-pin 40 projecting Vinwardly from member 12.V Y

f In operation, the body 9 normally-occupies the position vshown in full lines Vin Fig. land at thistime the cables 24 are inthe position shown in full lines in Fig. 1, and eccentrics 18 are in the lower position shown in Fig. 1. When it is desired to dump the body y9 the rod 35 Vwill be removed and crank 33 will Ythen be turned. vThis will rotate pinion 30 and through the gear 28 will rotate the gear 27 and shaft 25. Upon rotation of shaft 25 `the cable 24 willbe Ywound thereon, as indiplates, with thebo'dy 9, will be elevated. It will be seenthat normally,` the yoke 22 will be in the lowerposition shown in Fig. 1. As eccentrics 18 are raised, the yportion 22b of said yoke will gradually move upward be? tween the sides of yoke 23. .As the eccentrics approach their upper limit yof movement the portion 22b engages the bottom ofcross piece 10 carrying member 23. The eccentricsv 18 and member 22 now act as a toggle and further movement of eccentrics 18 and shaft 16 straightens this toggle so that the body 9 is additionally raised by the member 22, the plates 21 moving out of engagement with eccentrics 18. A greater range o-f movement is thus obtained than could be Vobtained with the eccentrics alone. Reverse movement of gear 27 and loweringof thebody is preventn e'df by the pawl 36. fWhen it is desired again to lower body 9 pawl y36 can be disengaged by lswinging handle 38 and the body 9 gradually lowered by permitting crank 33 slowly Vto revolve. When the body is again in horizontalv or normal position, rod 35 can be again inserted in place to lock the front end vof said'body, in its normalzposition.

vFrom the above description it is seen that the applicant has provided avery simple and efficient hoist or elevating mechanism for a truck or` vehicle 'body' and has also provided a verysimple attachment comprising members 12 an'd'parts carried thereby,which can be quickly and easily installed on the truck yor vehicle. #It is only necessary to remove the body 9 with its members-10 and 11 andto secure the members"^12 to the frame members 6. Members 21 and 23 can then be secured to the members 10, the pivot member 15 provided and the'truck is then converted into a dumping truck. ,The device comprises comparatively few vparts which are easily and inexpensively made. The device has beenamply demonstated in actual practice and found to be very successful and etlicient.

It will, of course, be understood that various changes may be made in the form, de.- tails, arrangement and'proportions of the parts without 'departingfrom the scope of the f applicants invention, which, generally stated, consists in a device capable ofcarrying out the yobjects above set forth, in the novel-parts and combinations of parts dis closed and .defined in the append-Qd .613411152 What is claimed is:

l. The combination with a vehicle body adapted to be raised, and a frame, of a shaft revolubly mounted in said frame, spaoed eccentrics mounted on said shaft adapted to enlgage and raise said body on rotation of said shaft, means for rotating said shaft and eccentrics for initially raising said body,` and a U-shaped yoke disposed between said eccentrics and pivoted at one end to said eccentrics close to their freejends and pivotally and slidably connected at its other end to said vehicle body, whereby it will not function in the initial movement of said eccentrics but will form in eect with said eccentrics a toggle in the later movement of sai'd eccentrics, whereby said body will be additionally lifted by said yoke and toggle.

2. A hoist attachment for a vehicle comprising spaced longitudinal members adapted to be supported on the vehicle frame, means for connecting said members to said trame, a pivot member traversing said members adapted to form a pivot for the vehicle body, a shaft supported in and traversing said longitudinal members, a pair of eccentric bars carried by said longitudinal memf bers for initially raising the body, and a member pivotally connected at one end to said eccentric bars movable between the same and slidably and pivotally connected at its other end to said body and arranged to form with said eccentric bars a toggle adapted to be y straightened to additionally raise said body.

3. The combination with a wagon body adapted to be raised and a frame, of a shaft mounted in said frame, spaced eccentrics on said shaft adapted to engage and raise said body when rotated, means for rotating said ecoentrics, a yoke having laterally extending pivots at its open end journaled in said eo-V centrics, and said yoke being connected to said bo'dy at its closed end with a slidable and pivotal connection. v

4. The combination with a vehicle body adapted to be raised and a frame, of a shaft mounted in said frame, means for rotating said shaft, spaced ecoentrics on said shaft and adapted to engage and raise said bo'dy when rotated, means for rotating said eccentrics, a narrow yoke depending from the bottom of said Vehicle body, a U-shaped yoke t disposed between said eccentrics having the ends of its legs pivoted close to the en'ds Vof said eccentrics and having its bight portion disposed between the sidesof said narrow yoke so as to have pivotal' and slidable movementtherein and adapted to engage the bottom of said body, said U-shaped yoke forming in effect with sai'd eccentrics a toggle whereby saidrbody will be additionally lifted by said yoke and toggle.

In testimony whereof I ai'ix my signature.l

JAY E. FOSTER.V 

